Anti-human MUC1 antibody Fab fragment

A conjugate, comprising one or more labeling moieties and an anti-human MUC1 antibody fab fragment, wherein said anti-human MUC1 antibody Fab fragment is selected from the group consisting of the following (a) and (b):

• (a) an anti-human MUC1 antibody Fab fragment comprising a heavy chain fragment comprising a heavy chain variable region consisting of the amino acid sequence represented by SEQ ID NO:
• 8 or SEQ ID NO:
• 10 and a light chain comprising a light chain variable region consisting of the amino acid sequence represented by SEQ ID NO:
• 12;
• and
• (b) an anti-human MUC1 antibody Fab fragment comprising a heavy chain fragment comprising a heavy chain variable region derived from a heavy chain variable region consisting of the amino acid sequence represented by SEQ ID NO:
• 8 or SEQ ID NO:
• 10 by the modification of glutamine at amino acid position 1 of SEQ ID NO:
• 8 or SEQ ID NO:
• 10 into pyroglutamic acid, and a light chain comprising a light chain variable region consisting of the amino acid sequence represented by SEQ ID NO:
• 12;
• and
• said anti-human MUC1 antibody Fab fragment is bound to 1 to 11 labeling moieties.